| (19) |
 |
|
(11) |
EP 0 219 322 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
10.02.1988 Bulletin 1988/06 |
| (43) |
Date of publication A2: |
|
22.04.1987 Bulletin 1987/17 |
| (22) |
Date of filing: 10.10.1986 |
|
|
| (84) |
Designated Contracting States: |
|
DE FR GB |
| (30) |
Priority: |
15.10.1985 US 787287
|
| (71) |
Applicant: DOW CORNING CORPORATION |
|
() |
|
| (72) |
Inventors: |
|
- Revis, Anthony
()
- Little, Michael Dean
()
- Dinh, Paul Charles
()
|
|
| |
|
| (54) |
A process for preparation of silyl ketene acetals |
(57) What is disclosed is a process for the manufacture of increased yields of high-purity
silyl ketene acetals, the process comprising a) contacting of methacrylic acid or
an ester of methacrylic acid with a hydrogen-containing silicon material in the presence
of a rhodium catalyst with inorganic ligands, and b) separation and isolation of the
desired product from the crude product.